Electrical connecter



Jan. 1o, 192s.

`H. W. BATCHELLER ELECTRICAL CONNECTER Filed Aug. 1. 1924 Patented Jan. 10, 1928.

n UNITED *STATES PA'rs1-1TA OFFICE.,

HUGH W.' BATCHELLER, or' LBETIIIEL', vERMONr.. AVSSIKGNOR To ROJAO MANUFACTR- ING Co., INC., or `BURLINGTON, lVERNION'LA CORPORATION OF VERMONT.

t l Janne'.rRIcALk CONNECTER.

' Application fileafaugusti, 1924. ser'iarrroj729,489.v

. This invention relates to an electrical connecter comprisinga socket, such as that com monly used to support an incandescent electric lamp, the socket being provided with internal conducting members adapted to connect the lamp, which islocated at one end of the socket', with a conducting cable at the opposite end of the socket. y

The object of the invention is to provide IO an improved construction of the soc (et, the internal conducting members, and the means securing the internal members to the socket,

whereby a simple, durable and relatively inexpensive connecter is produced, the parts l5 of which are adapted to be quickly and securely assembled. v Of the accompanying drawings part of this specification,- y

n Figure 1 shows partly in elevation and 2U partly in section, an'electrical connecter ernbodyingone form of the invention. y n

Figure 2 shows in elevation, the connecter shown by Figure 1 engaged' at one end with a plug, and at'the opposite end with the shell of a lamp bulb. Figure, 3 is a view similar to Figure 1 showing two sets of internal conducting members. y

Figure 4 is a fragmentary view similar to a portion of Figure 1' illustrating the operation of assembling the parts.

Figure 5 is a section on line 5 5 ot Fig ure 2. y

VFigure 6 shows partly in section and partly in lelevation a different embodiment of the invention. Y.

Figure? is a view similartoFigure 6 illustrating'a part 'of thef operation of assenr bling the parts.` The same reference characters indicate the same parts in all of the igures. V Rcferring'iirst to Figures 1 to 5, 12 designates a tubular socket of any suitable metal from `which opposed stops may be formed. To provide said'stops I form two series of tongues 13 integral with the tube by partly severing portions of the tube wall and bendforming a ing said portions inward after the insertion of the holders orwashers hereinafter described, so that each tongue has a side face normally inclined inward from the wall, and an end face at an angle with the side face, each series of tongues collectively constituting Aa stop. 14, 14 designate two independ- Vcent vside 'faces of the washers 14.

ent holding members or washers of insulat-' ing 7material movable longitudinally into the y socket and located side by side therein, said washers being` preferably discoidal and formed to somewhat closely lit the inner wall of the socket. The washers are provided with orifices 15 adapted to receive tubular portions or sections v16 of telescopic *conduct-v ing members, which are adapted to conduct current from-a contact member 17 at one end oi a fiexible conductor 18 secured to a plug 20 at one end portion of the socket, to acontact member 19 at the inner endof the shell 2On of ai'relectric'lamp'. The sections 16 are provided with fianges 21 seated on the ad'ahe washers 14 and the conducting members en gaged therewith constitute an internal'structure composed of part-s adapted to be assembled in the socket, asnext described. In assembling the described parts, the conducting member sections are slipped into the washer orifices 15, and the washers are forced into the socket until they are between the tongues, the latter being flush with the tube wall as shown full linesin Figure 4, and the ianges 21 beingabutted against each other'. The tongues are then bent or swaged inward as shown by'full lines in `Figure 1. andoby dotted lines in Figure 4, to form stops con` fining the washers as shown by Figure 1. The parts 'are lsoproportioned that wheny the washers are confined bythe end faces ofthe tongues, the flanges 21 of the conducting member sections are in close contact with each other, the stops immovably confining the washers, andthe washersbearing on the flanges 21 and abuttingsaid flanges together.

Each conducting Amember preferably in clude's a tubular section 1GV whichI call aA base section, a terminal section 23 which is movable in the basesection, anda spring24 adapted to press the two terminal sections outward an'dcause them to bear yieldingly on the terminals 17' and n K y f i M It 'willnowbe seen that the described part-s may be quickly, conveniently Vand inseparably assembled by first inserting the conducting members in the washers 14, then forcing the washers into the socket, and iinally confining the holders by converting the tongues into stops seated on the outer faces of the washers.

The connecter may be of the single contact type shown by Figures 1, 2 and 5, or the double contact type shown by Figure 3,

CII

these diiering only in the number of internal conducting members and contacts employed.

Figures 6 and 7 show a connecter of the single contact type, the construction of which diiiers from that shown by Figures 1 and 2 in that there is only one series ot Vtongues 13, these forming an inner or secondary stop, the socket here designated by 12' being provided with a primary stop 13 substituted for the other series of tongues, and formed as aninwardly projecting shoulder on which one oi the washers 1a is seated. In this modification, the parts are assembled by first inserting one washer 14rand its conducting member in the socket until the washer is seated on the primary stop 13, then inserting the other washer and its conducting member until the flanges 21 of the conducting members are abutted together, and then forcing inward the tongues 13 .and thus forming a secondary stop which is seated on the washer last inserted and coniines the structure formed by the washers and the conducting members.

It is obvious that they parts showny by TEigures 1 to 5 inclusive, may be assembled in the same way that the parts shown by Figures 6 and 7 Vare assembled, that is to say, the lower tongues 13 may be forced inward to form a primary stop before the insertion of the washers and conducting members, said washers and conducting members being then inserted successively and confined by forcing the upper tongues inward to iorm a secondary stop. y

In this modification, I show one telescopic conduct-ing member constructed as above described, and a non-telescopic conducting member 26 to which the conductor 18 may be connected by a binding screw 27 or otherwise, the spring 24a ot the telescopic member being seated on the member 26. It is obvious that for some uses each of the two aligned internal conducting .members may be of rigid, instead of telescopic construction, no

` springs being employed.

It will be seen that the inwardly Vprojecting oppositely facing primary and secondary stops are spaced apart a predetermined distance which is equal to the collective thicknessY of the washers and the iiangesot the conducting members, and that the two washers, when confined by the stops, are

spaced apart sufficiently to receive between their adjacent Jfaces the iianges formed on the meeting ends of the conducting members, and hold said meeting ends in close contact with each other when the secondary stop Ais formed. The washers may, therefore, be economically punched from sheet material of suit-able thickness, no recesses being required in the sides ot the washers. The parts may be quickly and conveniently assembled, and connedr by first inserting one washer and the corresponding conducting member in the socket to an extent permitted by the primary stop, then inserting the other washer and conducting member to an extent permitted by the meeting ends of the conducting members, and finally forming the secondarystop, and thereby confining the washers and clamping together the ianged meeting ends of the conducting members.

I claim:

l. An electrical conductor comprising a tubular socket having inwardly projecting primary and secondary stops spaced apart longitudinally of the socket a predetermined distance, two independent insulating washers whose collective thickness is less than the width of thespace between said stops, and two aligned conducting members extending through the orifices in said washers and having their meeting ends provided with annular anges which contact with the adjacent faces ofthe washers and maintain the latter in contact with the said primary and secondary stops.

2. An electrical conductor comprising a tubular socket having an inwardly extending annular, primary stop and a plurality of inwardly projecting secondary stops spaced HUGH W. BATCHELLER. 

